Do you ever send confidential/extremely personal information or documents via e-mail? Did you know that when you do this, you're trusting every single sysadmin that runs every single one of what might be dozens of servers between your computer and the intended recipients, plus anyone who has hacked any of these servers? Encryption technology works better than trust, says Alizard. In this article, learn how to use GPG, the encryption software built into most Linux distributions.